Freeze tolerance of Cyphoderris monstrosa (Orthoptera: Prophalangopsidae)

  title={Freeze tolerance of Cyphoderris monstrosa (Orthoptera: Prophalangopsidae)},
  author={Jantina Toxopeus and Jacqueline E. Lebenzon and Alexander H Mckinnon and Brent J. Sinclair},
  journal={The Canadian Entomologist},
  pages={668 - 672}
Abstract The great grig, Cyphoderris monstrosa Uhler (Orthoptera: Prophalangopsidae), is a large (20–30 mm, >1 g), nocturnal ensiferan that inhabits montane coniferous forests in northwestern North America. Cyphoderris monstrosa overwinters as a late instar nymphs, but its cold tolerance strategy has not previously been reported. We collected nymphs from near Kamloops, British Columbia, Canada in late spring to determine their cold tolerance strategy. Cyphoderris monstrosa nymphs were active at… 
A comparison of low temperature biology of Pieris rapae from Ontario, Canada, and Yakutia, Far Eastern Russia.
Elevational and Latitudinal Changes in Cold Tolerance of Nymph and Adult Mormon Crickets Anabrus simplex (Orthoptera: Tettigoniidae)
Early hatching at lower latitudes might increase the risk of early instars experiencing a severe cold snap relative to nymphs at high latitudes, and cold tolerance in immature and mature stages is more likely to be uncoupled when life stages do not coincide, as with Mormon crickets.
Evidence for non-colligative function of small cryoprotectants in a freeze-tolerant insect
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The Ander's organ: a mechanism for anti-predator ultrasound in a relict orthopteran
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Mechanisms underlying insect freeze tolerance
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Microclimate and variations in haemolymph composition in the freezing-tolerant New Zealand alpine weta Hemideina maori Hutton (Orthoptera: Stenopelmatidae)
  • H. Ramløv
  • Environmental Science
    Journal of Comparative Physiology B
  • 1999
The freeze-tolerant weta H. maori is exposed to a highly variable and cold environment all year round and several properties of its haemolymph composition can be attributed to these climatic conditions, e.g. the presence of ice-nucleating agents and an increase in the concentration of proline during cold hardening in the autumn.
The overwintering physiology of the emerald ash borer, Agrilus planipennis fairmaire (coleoptera: buprestidae).
Ice nucleation and freezing tolerance in New Zealand alpine and lowland weta, Hemideina spp. (Orthoptera; Stenopelmatidae)
All five subalpine and alpine populations of H. maori surveyed were found to be freezing tolerant, and it is hypothesized that this species is killed when a critical proportion of its body water is frozen.
Comparative analysis of overwintering physiology in nine species of semi‐aquatic bugs (Heteroptera: Gerromorpha)
An analysis of the ecophysiological aspects of overwintering in nine gerromorphan species of semi‐aquatic bugs, finding that there is a tight correlation between the supercooling point (SCP) and the lower lethal temperature.
Freezing survival by isolated Malpighian tubules of the New Zealand alpine weta Hemideina maori.
The ability of isolated Malpighian tubules from a freeze-tolerant insect, the New Zealand alpine weta (Hemideina maori), to withstand freezing was assessed by measuring post-freeze membrane
Supercooling capacity and cold hardiness of the eggs of the grasshopper Chorthippus fallax (Orthoptera: Acrididae)
Cold tolerance of the eggs of the grasshopper, Chorthippus fallax (Zubovsky), was examined in the laboratory and the supercooling capacity of such eggs is a good indicator of their cold hardiness and the species is a true freeze avoiding insect.
Climatic variability and the evolution of insect freeze tolerance
The climates of the two hemispheres have led to the parallel evolution of freeze tolerance for very different reasons, and this hemispheric difference is symptomatic of many wide‐scale disparities in Northern and Southern ecological processes.
Fat body cells and calcium phosphate spherules induce ice nucleation in the freeze-tolerant larvae of the gall fly Eurosta solidaginis (Diptera, Tephritidae)
Both calcium phosphate spherules and fat body cells have ice-nucleating activity sufficiently high to explain whole-body crystallization temperatures and represent a new class of heterogeneous ice nucleators that potentially regulate supercooling and promote freeze tolerance in E. solidaginis and possibly in other overwintering insects.
Phylogeny of the Ensifera (Orthoptera): A Hypothesis Supporting Multiple Origins of Acoustical Signalling, Complex Spermatophores and Maternal Care in Crickets, Katydids, and Weta
Numerical analyses of orthopteroid insects indicate that the Ensifera is a natural group as taxa in this suborder appear to form a separate clade (monophyletic group) in both cladistic and phe- netic analyses.